Turnbuckles
Hamburger Turnbuckle D-D Turnbuckles
A drop-forged and welded turnbuckle with a DD-style design, engineered for tension adjustment in wire ropes and chains. It features a robust carbon steel body with options for hot-dipped galvanizing, electro-galvanizing, or self-color finish. Sizes range from M24 to M38, with breaking loads from 2.9T to 9T and weights from 2.9kg to 9kg per piece. Designed for industrial use in construction, transportation, and rigging applications.
- Size
- M24-M38
- Material
- Carbon steel Surface: Hot Dipped Galvanized, Electro Galvanized, Self Color Process: Drop forged, Precision Ca
- Packing
- Cartons or Gunny Bags and then on Pallets
- Catalogue Family
- Turnbuckles
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Hamburger Turnbuckle D-D Turnbuckles Gives You
- DD-style design provides a clean, compact profile suitable for tight spaces and aesthetic integration in rigging systems
- Drop-forged and welded construction ensures high strength and resistance to dynamic loads
- Adjustable tension capability allows precise control of wire rope or chain tension during installation and operation
- Available in multiple surface finishes including hot-dipped galvanizing for corrosion resistance in outdoor and marine environments
- Standardized dimensions and breaking load ratings simplify selection and reduce on-site errors
- Self-color finish maintains the base steel appearance while offering minimal surface protection for indoor or dry environments
- Electro-galvanized option provides a smoother, more uniform coating than hot-dip for visible or precision applications
Application Scenarios
Where Hamburger Turnbuckle D-D Turnbuckles Is Used
- Tensioning wire ropes on temporary construction scaffolding and structural bracing systems
- Adjusting chain tension on heavy-duty trailers and transport equipment during loading and transit
- Securing cargo on flatbed trucks and railcars using adjustable lashing systems with chain or wire rope
- Tightening guy wires on temporary towers, cranes, and mobile structures in field operations
- Mounting and aligning industrial equipment where precise tension control is required
- Use in offshore or marine transport where corrosion resistance from galvanizing is critical
Who It Is For
Buyers This Product Is Built For
- Construction contractors specifying rigging hardware for temporary structures and scaffolding
- Logistics and freight operators managing cargo securement on trucks and trailers
- Industrial equipment installers requiring adjustable tension in rigging and lifting systems
- Marine and offshore service providers handling mooring and lashing on vessels and platforms
- Rigging distributors stocking turnbuckles with consistent dimensions and load ratings
- Manufacturers of transport and lifting equipment integrating turnbuckles into their assemblies
Problems It Solves
Problems This Product Removes
- Inconsistent tension in wire ropes or chains due to fixed-length fittings or manual adjustment
- Corrosion damage in outdoor or wet environments when using uncoated steel turnbuckles
- Bulk and poor fit of turnbuckles in confined spaces due to non-standard or bulky designs
- Need to source turnbuckles from multiple suppliers for different finishes, sizes, and load ratings
- Lack of traceability and standardized marking on turnbuckles used in safety-critical applications
- Difficulty in achieving precise tension control without over-tightening or under-tightening
Technical Features
Technical Features
- Drop-forged and welded construction for high strength and fatigue resistance
- DD-style design with symmetrical, compact form for consistent load distribution
- Adjustable threaded ends with M24 to M38 thread sizes for compatibility with standard fittings
- Breaking load stamped on the body for traceability and field verification
- Available in hot-dipped galvanized, electro-galvanized, or self-color finish
- Standardized dimensions including A, B, C, D, H, and weight per piece for each size
- Designed for use with wire ropes and chains in tensioning and securing applications
Specifications
Hamburger Turnbuckle D-D Turnbuckles Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 2.9T to 9T breaking load |
|---|---|
| Thread Size | M24 to M38 |
| Material | Carbon steel |
| Surface Finish | Hot-dipped galvanized, electro-galvanized, or self-color |
| Process | Drop forged and welded |
| Dimensions | A: 24–38mm, B: 35mm, C: 210–260mm, D: 12–30mm, H: 40–480mm |
| Weight | 2.9kg to 9kg per piece |
| Design Factor | Standard 4:1 minimum breaking load to safe working load |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- Carbon steel body drop forged for strength and impact resistance
- Hot-dipped galvanized coating for long-term corrosion protection in harsh environments
- Electro-galvanized finish for a smooth, uniform surface with moderate corrosion resistance
- Self-color finish for base steel appearance with minimal protection, suitable for indoor use
Manufacturing Process
How This Product Is Made
1Drop forging of the main body and threaded ends
2Welding of the threaded components to the body
3Heat treatment to enhance strength and durability
4Surface finishing via hot-dip galvanizing, electro-galvanizing, or self-color process
5Dimensional inspection and breaking load verification
6Stamping of breaking load and thread size on the body
7Packing in cartons or gunny bags, then palletized for export
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches before release
- Dimensional tolerance checking against published size table
- Breaking strength validation to confirm 4:1 design factor
- Surface finish thickness and adhesion check for galvanized options
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at the Qingdao warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the body for traceability and compliance
- Private label and OEM marking available for brand integration
- Finish selection in hot-dipped galvanizing, electro-galvanizing, or self-color
- Custom dimensions and thread configurations built to a supplied drawing
- Packing configuration adjusted for carton count, pallet pattern, or retail display
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Standard turnbuckle with plain finish | The galvanized options offer superior corrosion resistance in outdoor and marine use, but may have slightly higher cost and reduced thread clearance |
| Threaded rod with nuts | The turnbuckle allows continuous adjustment and better load distribution, but requires more space and has a higher part count |
| Screw-type turnbuckle | The DD-style design offers a more compact profile and better load symmetry, but may have less thread engagement in high-tension applications |
| Cast iron turnbuckle | Drop-forged steel has higher strength and impact resistance, but cast iron is cheaper and easier to machine for low-load applications |
Use Guide
How To Use And Inspect Hamburger Turnbuckle D-D Turnbuckles
- Match the stamped breaking load to the calculated line tension, not the equipment rating
- Ensure both threaded ends are fully engaged before applying load to prevent slippage
- Use a torque wrench to tighten to recommended values if specified, avoiding over-tightening
- Inspect the galvanized coating for damage after installation; damaged areas may corrode faster
- Avoid side loading or bending moments on the turnbuckle body to prevent deformation
- Retire the turnbuckle if the body shows deformation, threads are stripped, or the marking is illegible
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Answers
Hamburger Turnbuckle D-D Turnbuckles FAQ
What sizes are available for the Hamburger DD Turnbuckle?
Sizes range from M24 to M38 thread size, with breaking loads from 2.9T to 9T and weights from 2.9kg to 9kg per piece.
What surface finishes are offered?
Options include hot-dipped galvanizing, electro-galvanizing, and self-color (bare steel) finish.
Can you provide Material Test Certificates?
Yes, a Material Test Certificate to EN 10204 3.1 is supplied on request with each order.
Is custom tonnage stamping available?
Yes, custom tonnage stamping, private label marking, and OEM packing are standard options.
How are the turnbuckles packed for export?
Packed in cartons or gunny bags, then palletized. We can configure carton count and pallet pattern to suit your warehouse or retail needs.
What is the design factor for these turnbuckles?
A standard 4:1 design factor applies, meaning the minimum breaking load is four times the safe working load.
Can you build custom dimensions or thread configurations?
Yes, custom sizes and thread configurations can be built to a supplied drawing or specification.
Need A Quote On Hamburger Turnbuckle D-D Turnbuckles
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.